APA (7th ed.) Citation

Hubbard, H. S. (2011). Beyond. Project Gutenberg.

Chicago Style (17th ed.) Citation

Hubbard, Henry Seward. Beyond. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Hubbard, Henry Seward. Beyond. Project Gutenberg, 2011.

Warning: These citations may not always be 100% accurate.